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<h2>\ref</h2>


<p><tt>\ref{key}</tt></p>


<p>The <tt>\ref</tt> command produces the number of the

    sectional unit, equation number, ... of the corresponding

    <tt><a href="ltx-252.html">\label</a></tt> command.</p>


<p>Bibliographic references using the

    <tt><a href="ltx-73.html">\thebibliography</a></tt>

    mechanism obtain their number or label using

    <tt><a href="ltx-211.html">\cite</a></tt>.</p>


<p>The <tt>\ref</tt> command is <a href="fragile.html">fragile</a>.</p>


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    See also <a href="ltx-13.html">Cross References</a><br>

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